remove grey lines

how can I put the gray libnes away:

https://www.wolfgang-schmidtke.de/sammlung/test

above “1979 – Simple Minds – Chelsea Girl”
above “A1”
above and under “B1”

my writing – without grey lines:

<table>
<th rowspan=”3″>
<td>1979 – Simple Minds – Chelsea Girl</td>
</th>
<tr>
<td>A1</td>
<td>Chelsea Girl</td>
<td>4:33</td>
</tr>
<tr>
<td>B1</td>
<td>Garden Of Hate
<td>4:27<td>
<tr>
</table>